Heater for motor vehicles



Oct. 20, 1931. R B, OTWELL HEATER FOR MOTOR VEHICLES Filed Dec. 1, 1930 4R E M IM I. U 5

N1 i li H II /4 l1 A ttor neg Patented Got. 20, 1931 human- 3.- TwEL'L,sm ommcsmm,

p M mswjmms I Application liled DeGember 1, 1930,?Shria1 Ne. 199,185.

w invention relates to aheater for motor driven vehicles, shown in 1 the accompanying drawings, in which the hot' gjases discharged from an internal combustion engine are utilizedto heat air delivered tothe' vehicle body from" an air chamber" integral with the ex; haust manifold,- the volume of'the hot gases in the exhaustfmanifoldj being thereby con tracted, reducing. the back pressure and 'indirectly increasing the power of the engine. The primary object of the-present inventurbing the parts for eitheri summer br winter drivingtherehyadding matk-iriall3 to the l comfort of the car occupants ciency of the engine.

In -putting the foregoing 7 feet, a permanently attached slidable platefis mounted upon-the upper wall of the heater having a plurality of-inclined slotswith corresponding voverhanging louvers directed toward the usual louvers of the hood not showncovering the power plant of the vehicle,means being provided to secure the slidable' louver plate against displacement while permitting its manual lon'gitudinal ad-- justment along the wall of theheater to effeet a registration of'the slotsin the-plate heater and v closure of e e enmes he chamber tl rough the open funnel-shaped end F,-is heatedin its passage to therear of through the wall of theheater as required. I

- With the: foregoing and other Objects in view whichhwilljappear as the description proceeds, the inVeIltlOlr'fl-Hther resides i-nthe combination and arrangement of parts and in 'thedetails of "construction hereinafter; I descrihed andclaimed; it being understood that 'ehanges may beiinade in; the precise embodi- In the drawings accompanying this speci- I fication:

V Figure'l is a plan view of a combined heater and exhaust manifold, with the slidabl'e louver' plate: installed thereon.

Figure 2 is a side elevation of the same;

Figure 3 is a cross-sectional view taken on or about line 3-3 of Figure 2.

Figure 4 is an enlarged fragmentary vertical lognitudinalsectional view through a r portion of the upper wall of the heating chamber and the overlapping slidable louver plate, the'latter being. shown in position to close the vent openings through the wall of the heating chamber that'the heated air may pass 'to'the body ofthe vehicle; I:

Figure 5 is a similar fragmentary'seotional I view of the slidaloleflouver plateadjusted Y relation to ftheslotted wall of the airheat "ingchainher to permit the heated air topass through its 'slotte'd openingsinto thehood "of-the power plant,%not sho andjthe 51 j I Figure 6is'a-perspective viewjof' the .Befmingew s the letter f reference; at p gdrawingsz' e and C designates the'heatingchamber, :re-

,Withthe correspondingrslots in thewau f the tunnels 7 extending the entire length of the slid- "able louver plate detached from the combined theater and e h q t manifoldl' denotesl;1n its ntlrety a combined ex-' 'haust manifold and heaterffor moter drive'n vehicles, B indicates the "exhaust c' hamher heating chamber,'whereby fresh air entering the heating chamber,which in turn is con- The upper wall Hef the air chamloer is :formed withaplurality of spaced openings I,

closed by a slidable louver plate J supported uponthetop of then-heating chamber. The

plate to register with the openings I in the upper wall of the air heating chamber, that hicle. The slidable louver plate J has downwardly extending flanges L, overlapping the sides ofthe heating chamber, which rest upon ribs M, projecting from the side wallsof the combined heater and exhaust manifold.

N arelouvers integral with the plate J set at an angle to cover the openings in said plate 1 that the air discharged through'the openings j v To shutoff may be projected by the louvers towa rd thei side walls of the hood housing the engine, whereby the air may be drawn through the the hood to the outerrat louvers formed in mos'phere.

P, Pare screwsextending through elon-f gated slots Q, Q, near the ends of the louver plate to secure the plate when adjusted against displacement or chattering caused by the: vibration of the vehicle; j r i d When it is desired to convey the heated: air into the body of the vehicle, the louver plate J is adjusted as shown in Figure 4 that it may close the discharge openings through the upper wall of the air heating-chamber, the heater being coupled by a pipe, or other suitable connection, with the 1 body of the a vehicle through an opening provided in the 11351111 01 that purpose. .1

the vehicle for summer driving, the pipe conne'ction between l the heater and the vehicle may be closed bywa suitable 'valve not shown-or said pipe may be disconnected.

The louver plate is then adjusted tothe position. indicated in Figure 5,the slets through the plate registering with the slots. in theupper wall of the heating chamber,

permitting the heated airto passdirectly into a and nnderthe hood covering the engine, from whence it is drawn to the outside atmosphere through the usual louvers in the hood,;.as will -be readily,understood It will be apparent to adapt the device for winter driving requires only theshi'fting of the louver plate ,toa position adapted to close the openings through the wall of the air v chamber, as indicated .in Figure 4c,.-an'd"that for summer driving the louver plate is adjusted to register with the openings in the 7 upper wa llof the air chamber-as indicated I in Figure 5,-.whereupon the heated air as it f is discharged will be projected'by the louvers inthe slidable plate toward the usuallo'uvers r formed in 'the'side wallsof the hood covering theengin'e, through which it is drawn to 0 i I the outer atmosphere.

Having thus described my invention, what I I claim is:

Ii 1. comprising a combined exhaust manifold and A device or the drama described,

air heating chamber constructedof cast metal the delivery f heated air to with the air heating chamber disposed above the exhaust manifold, said air heating chamber and exhaust manifold being separated from each other by a horizontal wall integral -with the side walls of the device,-the air heatr able plate and, respectively overhanging the openings through said plate, whereby the heated "air 'dischargedthrough' said, openings is directed. away iromgsaid device. a

2. A deviceof the character described, a

combined exhaust manifold, an air. heating chamber, constructed of cast metal with the air. heating chamber disposed above the exhaustmanifold, said air heating chamber and exhaust manifold being separated from each ,other by; a horizontal wall integral with the: side walls ofthe device, the airheating chamher being open .at each end, 7 with za plu'rality jot spaced "openings through its; upper wall for the escape of air heated thereing a slidable plate, mounted uponrthe upper wall of the heating chamber haying; downwardly directred flanges overlapping the side wallsof the ,l evice, saidslidable plate having aplurality of openings spaced apart and extending transversely at an angle" to the sides ofthe plate; a 'pluralitybf louvers integral with saidj'plate respectively overlapping said openings, said llouyers being adapted todirect' air escaping through saidopenings in a substantially transversedirection in relation to the-device, said-slidable plate having also "elongated slots extending longitudinally at eachend-of the plate torthe passage of screws extending through said slots into the wall of .the' airchainber whereby said slidable plate;

may; be secured when adjusted and held against accidental displacement from the rplatei A device of the character described,

comprising an exhaust manifold, with an aira heating chamber disposed above butseparated from'the exhaust manifold bya wall'ini tegral with the walls of. the device, the upper wall of the hot air chamber having a pluralat an angle to the side wallsiof the heating spaced openings extending at' an angle to the side walls of the air chamber and registrar ity of spaced openings extending transversely 7 ble with the inclined openings through the wall of the air chamber, whereby upon the adjustment of the slidableplate air "heated in said chamber may either escape from the chamber before entering the body of the vehicle, or be delivered to the body of the vehicle to heat the latter, said slidable plate I formed also with inclined louvers overhang- V 10 ing the respective openings in the plate i whereby upon adjusting. the plate so thatits openings may be in registration with themclined openings in the air chamber, heated air in said chamber is released and directed toward louvers in the side walls of a hood overhanging hicle. i e

4. In a device of the character described,

I an air chamber, heated by the exhaust gases of an internal combustion engineand adapted for connection with the body of a motor driven vehicle, said air heating chamber having a plurality of spaced openings through which the heated air may escape before reaching the body of the vehicle; and a slidable plate mounted upon the wall of the air heat ing chamber having a plurality of openings with overhanging louvers spaced apart, whereby upon adjustment of the plate inrelation to the plurality of spaced openings in the wall of the chambensaid openings may be either closed to deliver theheated air into the. body of the vehicle, or opened that the heated air discharged through said openings finay be directed by the louvers away from the evlce.

5. A device of the character described, comprising a combined exhaust manifold and a air heating chamber, vwith the air heating chamber disposed above the exhaust chamber and open at each end for the passage of air, said air heating chamber having a plurality of spaced openings through its upper'wall for the escape of heated airtherethrough, a slid able plate adapted to close said openings mounted upon the wall of the heating chamber, having a plurality of openings with overhanging louvers adapted to register with the spaced openings of the heating chamber,

7 tion.

whereby when the openings in the-plate are brought into'registration with the openings in the heating chamber, the heated air is direoted by the louvers away from the device.

In testimony whereof, I sign RALPH B. OTWELL.

the power plant of a motor vej I this specifica- I 

